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DE4123641A1 - Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller - Google Patents

Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller

Info

Publication number
DE4123641A1
DE4123641A1 DE19914123641 DE4123641A DE4123641A1 DE 4123641 A1 DE4123641 A1 DE 4123641A1 DE 19914123641 DE19914123641 DE 19914123641 DE 4123641 A DE4123641 A DE 4123641A DE 4123641 A1 DE4123641 A1 DE 4123641A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
motor
windscreen
rain
controller
infrared
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19914123641
Other languages
German (de)
Inventor
Joannis Troussas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TREBE ELEKTRONIK INH JOANNIS TROUSSAS 6336 SOLMS DE
TREBE ELEKTRONIK INH JOANNIS T
Original Assignee
TREBE ELEKTRONIK INH. JOANNIS TROUSSAS, 6336 SOLMS, DE
TREBE ELEKTRONIK INH JOANNIS T
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/04Wipers or the like, e.g. scrapers
    • B60S1/06Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/04Wipers or the like, e.g. scrapers
    • B60S1/06Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B60S1/0833Optical rain sensor

Abstract

The controller automatically switches on and continuouslly controls the motor, depending on the number and thickness of the drops falling on the windscreen. An infrared light source housed (9) in the vehicle roof (8) directs a beam at part (12) of the windscreen. The beam is modulated in frequency and amplitude according to the number and thickness of the rain sensor (2), also housed (9) in the roof. An electrical signal (UH) derived with amplitude determined by the rain density is used by a control circuit to vary the wiper motor speed. ADVANTAGE - Does not require windscreen to be modified, more reliable.

Description

Die Erfindung betrifft ein Verfahren zur Einschaltung und stufenlosen Regelung eines Scheibenwischermotors an Automo bilen und ähnlichen Fahrzeugen in Abhängigkeit von der Stärke des auffallenden Regens, sowie eine Vorrichtung zur Durchführung des Verfahrens. The invention relates to a method for switching on and infinitely variable control of a windscreen wiper motor to Automo bilen and similar vehicles in response to the strength of the incident rain, as well as an apparatus for performing the method.

Es sind bereits mehrere Vorschläge bekannt geworden, deren Ziel es ist, den Motor eines Scheibenwischers von Automobilen bei Regenbeginn automatisch einzuschalten und die Drehge schwindigkeit des Motors automatisch in Abhängigkeit von der Stärke des fallenden Regens zu steuern. Several proposals have already become known, whose aim is to automatically switch on the motor of a windscreen of automobiles in the rain beginning and the Drehge automatically speed to control the motor depending on the strength of the falling rain. Insbesondere wurde im Patent .. (Anm.: P 41 17 945.5) vorgeschlagen, zwei elektrische Leiter an der Windschutzscheibe zu befestigen, die als Kondensator wirken, dessen Kapazität in Abhängigkeit von den auf die Scheibe fallenden Regentropfen veränderlich ist, wobei das ΔC benutzt wird, die Drehgeschwindigkeit des Motors zu regeln. In particular, (P 41 17 945.5 Note .:) was in the patent .. proposed to mount two electrical conductors on the windshield, which act as a capacitor, whose capacitance is variable in response to the falling of the disk raindrops, wherein the .DELTA.C used to regulate the rotation speed of the motor.

Diese Vorrichtung hat jedoch den Nachteil, daß auf der Scheibe ein Fremdkörper, nämlich die aufgeklebten elektrischen Leiter, vorhanden ist, der auf der Scheibe eine Erhöhung bildet, die beim Putzen der Scheibe von innen oder außen beschädigt werden kann. However, this device has the disadvantage that is present on the disc a foreign body, namely the bonded electrical conductor forms an elevation on the disc, which can be damaged from the inside or the outside during cleaning of the disc.

Der Erfindung liegt die Aufgabe zugrunde, diesen Nachteil zu vermeiden und ein Verfahren und eine Vorrichtung zur Durch führung des Verfahrens anzugeben, welches die Scheibe unver ändert läßt, so daß die glatte Scheibenfläche erhalten bleibt und demzufolge keine mechanischen Beschädigungen auftreten können. The object underlying the invention is to avoid this disadvantage and to provide a method and an apparatus for the implementing of the method, which can change without the disk, so that the smooth disk surface is maintained and consequently no mechanical damage can occur.

Diese Aufgabe ist durch ein Verfahren gelöst, das die im Anspruch 1 angegebenen Verfahrensschritte umfaßt. This object is achieved by a method comprising the method steps indicated in claim. 1

Im wesentlichen besteht das Verfahren darin, die Scheibe mit einem Lichtstrahl anzustrahlen, der zunächst ein Gleichlicht strahl ist. In essence, the method is to irradiate the disk with a light beam having a constant light is initially beam. Trifft dieser Gleichlichtstrahl auf der Scheibe auf die Wassertropfen, so wird er in unregelmäßiger Weise moduliert, weil die Tropfen durch den auftreffenden Fahrtwind und die gegenwirkende Oberflächenspannung des Wassers ständig in unkontrollierter Weise ihre Form ändern. If the latter constant light beam on the disc on the water droplets, it is modulated in an irregular way because the drops by the impinging airstream and the counteracting surface tension of the water continuously in an uncontrolled way change their shape.

Dieses modulierte Licht wird von den Wassertropfen diffus reflektiert, wobei die Frequenz und die Amplitude der Modu lation ein Maß für die Anzahl der auf der Scheibe sitzenden Regentropfen sind, dh also für die Stärke des fallenden Regens. This modulated light is diffusely reflected from the water droplets, wherein the frequency and amplitude of the modu lation are a measure of the number of sitting on the disk raindrops, so that the strength of the falling rain.

Ein Teil der reflektierten Lichtstrahlen wird von einem Sensor aufgefangen, dem eine Auswerteschaltung nachgeordnet ist, in der zunächst das auf den Gleichlichtanteil zurückgehende Signal ausgefiltert wird und das verbleibende Signal nach Frequenz und Amplitude derart ausgewertet wird, daß ein der Stärke des fallenden Regens proportionales Signal zur Verfügung steht, das nach Verstärkung zur Steuerung der Drehgeschwindigkeit des Scheibenwischermotors verwendet wird. A portion of the reflected light beams is captured by a sensor, an evaluation circuit is arranged downstream, in the first of the returning to the direct light component signal is filtered and the residual signal is analyzed by frequency and amplitude such that a strength of the falling rain signal proportional to is available, which is used, after amplification, to control the rotational speed of the wiper motor.

Obwohl grundsätzlich alle Arten von elektromagnetischen Wellen zur Bestrahlung der Regentropfen auf der Scheibe verwendbar sind, also auch sichtbares Licht, wird jedoch insbesondere vorgeschlagen, für diese Bestrahlung Infrarot-Licht zu ver wenden. Although in principle all types of electromagnetic waves used to irradiate the rain drops on the window, including visible light, but is proposed in particular apply for this irradiation infrared light to ver. Dieses Infrarotlicht wird vorzugsweise ein Gleich licht sein, es kann aber auch ein Wechsellicht sein, dessen Wellen durch die Regentropfen eine Modulation aufgeprägt wird. This infrared light will be light preferably a direct, but it can also be a light, whose wave is impressed by the raindrops modulation.

Eine Vorrichtung zur Durchführung des Verfahrens besteht gemäß der Erfindung aus einem IR-Sender und einem IR-Sensor, die gemeinsam nebeneinander in einem Gehäuse untergebracht sind. An apparatus for carrying out the method according to the invention consists of an IR transmitter and an IR sensor, which are placed together side by side in a housing. Dieses Gehäuse ist im Fahrzeuginneren montiert mit Sende- und Empfangsrichtung zur Windschutzscheibe. This housing is mounted inside the vehicle with transmit and receive directions to the windshield. Vorzugsweise kann die Montagestelle am Fahrzeugdach sein, so daß zwischen den vorderen Plätzen die Blickrichtung zur Scheibe frei ist. Preferably, the mounting location may be on the vehicle roof, so that the viewing direction to the disc is free between the front seats. Es kann aber für die Montage auch jeder andere geeignete Platz gewählt werden. but it can also be selected at any other suitable place for installation. Dabei verlaufen dann sowohl der Beleuchtungsstrahl als auch der Reflexionsstrahl durch das Glas der Scheibe, was die Wirksamkeit der Erfindung in KeinerWeise beeinträchtigt. Here, then run both the illumination beam and the reflected beam through the glass of the disk, which impairs the effectiveness of the invention in No enough,.

In der Zeichnung ist die Erfindung in einem Ausführungsbei spiel dargestellt. In the drawing the invention is shown in a Ausführungsbei game. Es zeigt It shows

Fig. 1 schematisch das Prizip des erfundenen Verfahrens, Fig. 1 shows schematically the Prizip of the invented method,

Fig. 2 schematisch die räumliche Anordnung des Sender- und Sensor-Teiles im Fahrzeug, Fig. 2 schematically shows the spatial arrangement of the transmitter and sensor part in the vehicle,

Fig. 3 eine Diagramm-Darstellung der Frequenz des Be leuchtungsstrahles und des Reflexionsstrahles, Fig. 3 is a diagram representation of the frequency of the Be leuchtungsstrahles and the reflection beam,

Fig. 4 das Blockschaltbild einer dem IR-Sensor nachge ordneten Auswerteschaltung. Fig. 4 is a block diagram of the IR sensor nachge associated evaluation circuit.

In Fig. 1 sind mit 1 der IR-Sender und mit 2 der IR-Sensor bezeichnet. In Fig. 1, with 1 the IR transmitter and designated 2, the IR sensor. 3 ist die Frontscheibe, auf der die Wassertropfen 4 sitzen. 3 is the front wheel on which the water droplet sitting. 4 Der Sender 1 sendet Gleichlichtstrahlen in Pfeil richtung A. Von den Wassertropfen 4 wird das Licht in Pfeil richtung B reflektiert, aber nicht mehr als Gleichlicht, sondern als moduliertes Wechsellicht. The transmitter 1 transmits direct light beams in the direction of arrow A. Of the water drops 4, the light in the direction of arrow B is reflected, but not more than direct light, but as a modulated alternating light. Diese Modulation geschieht an den Wassertropfen 4 , und zwar dadurch, daß die Tropfen ständig ihre Form ändern. This modulation occurs at the drop of water 4, namely by the fact that the drops constantly change their shape. Auf sie trifft der Fahrt wind mit der Tendenz, sie platt zu drücken. On her journey meets wind that tends to push them flat. Dem weichen die Tropfen vermöge ihrer Oberflächenspannung seitlich aus. The soft drops virtue of its surface tension from the side.

In der neuen Lage wiederholt sich dieser Vorgang, und die Tropfen pendeln zurück in die alte Stellung. In the new situation, this process is repeated, and the drops commute back to the old position. Die Tropfen vibrieren demzufolge ständig hin und her, was eine Modu lation des Lichtes erzeugt. The droplets vibrate accordingly constantly back and forth, creating a Modu lation of light.

Fig. 3 zeigt ein Diagramm des eingestrahlten Gleichlichtes und des reflektierten Wechsellichtes. Fig. 3 shows a diagram of the incident DC light and reflected light change. Dabei sind sowohl die Band breite des Wechsellichtes als auch dessen Frequenz ein Maß für die Anzahl der Wassertropfen auf der Scheibe, dh ein Maß für die Stärke des Regens. Both the band width of the light changes and the frequency of which are a measure of the number of water drops on the window, that is a measure of the intensity of the rain.

Beides, Bandbreite und Frequenz, werden in der in Fig. 4 ge zeigten Auswerteschaltung zur Gewinnung eines Signals U/f benutzt, mit dem letztlich die Drehgeschwindigkeit des Scheibenwischermotors gesteuert wird. Both bandwidth and frequency are in the ge in Fig. 4 showed evaluation circuit to obtain a signal used U / f, which, ultimately, the rotational speed of the wiper motor is controlled.

Im einzelnen sind in der Schaltung der Fig. 4 ein RC-Glied 5 und eine Diode 6 enthalten, der ein Verstärker 7 nachge schaltet ist. In particular, an RC element are in the circuit of Fig. 4 and 5 included a diode 6, the nachge an amplifier 7 is turned on. An dessen Ausgang steht das Signal U/f an, mit dem der nichtgezeigte Motor gesteuert wird. At whose output the signal U / f is at, with the not shown motor is controlled.

Fig. 2 zeigt, wie etwa eine Vorrichtung zur Durchführung des Verfahrens im Inneren des Automobils montiert sein kann. Fig. 2, may be such as a device for carrying out the method mounted inside of the automobile. Die Darstellung zeigt einen Blick aus dem Autofond in Richtung der Windschutzscheibe. The illustration shows a view from the car back toward the windshield. Mit 8 ist das Autodach bezeichnet, an dem in einem Gehäuse 9 der IR-Sender 1 und der IR-Sensor 2 enthalten sind. 8 with the car roof is referred to in a housing 9 of the IR transmitter 1 and the IR sensor 2 is included in the. Der Sender strahlt zwischen den Vordersitzen 10 und 11 hindurch einen räumlich begrenzten Bereich 12 an, aus dem die modulierten Strahlen zum Sensor 2 zurück reflektiert werden. The transmitter emits between the front seats 10 and 11 through a localized region 12 at, from which the modulated beams are reflected back to the sensor. 2

Claims (3)

1. Verfahren zur Einschaltung und stufenlosen automa tischen Regelung der Drehgeschwindigkeit eines Scheibenwi schermotors an Automobilen und ähnlichen Fahrzeugen in Abhän gigkeit von der Anzahl und Dicke der auf die Scheibe fallenden Regentropfen, dadurch gekennzeichnet, 1. A method for switching on and continuously variable automatic tables controlling the rotational speed of a motor Scheibenwi shear on automobiles and similar vehicles in depen dependence on the number and thickness of the falling raindrops to the disc, characterized in that
a daß ein räumlich begrenzter Bereich ( 12 ) der Fenster scheibe ( 3 ) mit einem Lichtstrahl angestrahlt wird, a that a spatially limited area (12) is irradiated of the window pane (3) with a light beam,
b daß der Lichtstrahl durch die auf die Fensterscheibe auffallenden Regentropfen ( 4 ) eine Modulation erfährt die in Frequenz und Amplitude von der Anzahl und Dicke der auf die Scheibe ( 3 ) gefallenen Regentropfen ( 4 ) abhängig ist, b that the light beam through the window pane to the striking raindrops (4) a modulation undergoes the fallen in frequency and amplitude from the number and thickness of the disc (3) drops of rain (4) is dependent,
c daß der Lichtstrahl von den Regentropfen ( 4 ) diffus zu einem optischen Sensor ( 2 ) reflektiert wird, und c that the light beam from the raindrop (4) diffuse to an optical sensor (2) is reflected, and
d daß hinter dem Sensor ( 2 ) aus dem modulierten Reflexi onsstrahl ein elektrisches Signal (U/f) gewonnen wird, das in seiner Stärke von der Dichte des fallenden Regens bestimmt ist und in einer Steuerschaltung benutzt wird, um die Drehgeschwindikeit des Schei benwischermotors zu steuern. d that behind the sensor (2) is recovered from the modulated Reflection onsstrahl an electrical signal (U / f) which is determined in its strength by the density of the falling rain and is used in a control circuit to the Drehgeschwindikeit the ticket benwischermotors to control.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Lichtstrahl ein Infrarot-Lichtstrahl ist. 2. The method according to claim 1, characterized in that the light beam is an infrared light beam.
3. Vorrichtung zur Durchführung des Verfahrens nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß der Sender ( 1 ) und der Sensor ( 2 ) des Lichtstrahls nebeneinander in einem Gehäuse ( 9 ) untergebracht sind, das im Fahrzeuginneren montiert ist, so daß die Bestrahlung der Regentropfen und die Reflexion zum Sensor ( 2 ) durch die Fensterscheibe ( 3 ) erfolgt. 3. A device for performing the method according to claims 1 and 2, characterized in that the transmitter (1) and the sensor (2) of the light beam are adjacent to each other housed in a housing (9) which is mounted inside the vehicle, so that the irradiation is carried out, the raindrop and the reflection to the sensor (2) through the window (3).
DE19914123641 1991-07-17 1991-07-17 Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller Withdrawn DE4123641A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914123641 DE4123641A1 (en) 1991-07-17 1991-07-17 Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914123641 DE4123641A1 (en) 1991-07-17 1991-07-17 Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller
JP19063692A JPH05193451A (en) 1991-07-17 1992-07-17 Method and apparatus for controlling window-wiper motor

Publications (1)

Publication Number Publication Date
DE4123641A1 true true DE4123641A1 (en) 1993-01-21

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Application Number Title Priority Date Filing Date
DE19914123641 Withdrawn DE4123641A1 (en) 1991-07-17 1991-07-17 Vehicle windscreen wiper motor speed controller depending on rain intensity - detects modulation of infrared light reflected from screen by rain drops via optical sensor coupled to motor controller

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Country Link
JP (1) JPH05193451A (en)
DE (1) DE4123641A1 (en)

Cited By (19)

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DE9301124U1 (en) * 1993-01-28 1993-03-25 Wolle, Rudi, 5442 Mendig, De
EP0698261A1 (en) * 1993-05-07 1996-02-28 Dennis J. Hegyi Multi-fonction light sensor for vehicle
DE19755441A1 (en) * 1997-12-13 1999-06-17 Itt Mfg Enterprises Inc Adjustment of automobile rain sensors without additional circuitry
DE19801745A1 (en) * 1998-01-20 1999-07-22 Itt Mfg Enterprises Inc Car windscreen condition monitor for detecting rain
WO2000032453A1 (en) * 1998-11-28 2000-06-08 Valeo Auto-Electric Wischer Und Motoren Gmbh Device for detecting particles on a windshield
US6084519A (en) * 1993-05-07 2000-07-04 Control Devices, Inc. Multi-function light sensor for vehicle
US6313454B1 (en) 1999-07-02 2001-11-06 Donnelly Corporation Rain sensor
US6320176B1 (en) 1993-02-26 2001-11-20 Donnelly Corporation Vehicle rain sensor using imaging sensor
US6353392B1 (en) 1997-10-30 2002-03-05 Donnelly Corporation Rain sensor with fog discrimination
US7414216B2 (en) * 2005-01-07 2008-08-19 Lite-On It Corporation Touching rib of input unit and mold thereof
US7655894B2 (en) 1996-03-25 2010-02-02 Donnelly Corporation Vehicular image sensing system
US7859565B2 (en) 1993-02-26 2010-12-28 Donnelly Corporation Vision system for a vehicle including image processor
US7972045B2 (en) 2006-08-11 2011-07-05 Donnelly Corporation Automatic headlamp control system
US8017898B2 (en) 2007-08-17 2011-09-13 Magna Electronics Inc. Vehicular imaging system in an automatic headlamp control system
US8063759B2 (en) 1993-02-26 2011-11-22 Donnelly Corporation Vehicle vision system
US8446470B2 (en) 2007-10-04 2013-05-21 Magna Electronics, Inc. Combined RGB and IR imaging sensor
US8451107B2 (en) 2007-09-11 2013-05-28 Magna Electronics, Inc. Imaging system for vehicle
US9509957B2 (en) 2008-07-24 2016-11-29 Magna Electronics Inc. Vehicle imaging system
US9940528B2 (en) 2015-11-20 2018-04-10 Magna Electronics Inc. Driver assistance system for vehicle

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KR100751427B1 (en) * 2006-06-02 2007-08-16 (주)에프에스씨 Ambient light rejection enhanced rain sensing apparatus in array structure

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Cited By (38)

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DE9301124U1 (en) * 1993-01-28 1993-03-25 Wolle, Rudi, 5442 Mendig, De
US6320176B1 (en) 1993-02-26 2001-11-20 Donnelly Corporation Vehicle rain sensor using imaging sensor
US6831261B2 (en) 1993-02-26 2004-12-14 Donnelly Corporation Vehicle headlight control using imaging sensor
US6559435B2 (en) 1993-02-26 2003-05-06 Donnelly Corporation Vehicle headlight control using imaging sensor identifying objects by geometric configuration
US7859565B2 (en) 1993-02-26 2010-12-28 Donnelly Corporation Vision system for a vehicle including image processor
US8063759B2 (en) 1993-02-26 2011-11-22 Donnelly Corporation Vehicle vision system
US5703568A (en) * 1993-05-07 1997-12-30 Hegyi; Dennis J. Multi function light sensor for vehicle
EP0698261A1 (en) * 1993-05-07 1996-02-28 Dennis J. Hegyi Multi-fonction light sensor for vehicle
EP0698261A4 (en) * 1993-05-07 1996-07-03 Dennis J Hegyi Multi-fonction light sensor for vehicle
US6084519A (en) * 1993-05-07 2000-07-04 Control Devices, Inc. Multi-function light sensor for vehicle
US7994462B2 (en) 1996-03-25 2011-08-09 Donnelly Corporation Vehicular image sensing system
US8222588B2 (en) 1996-03-25 2012-07-17 Donnelly Corporation Vehicular image sensing system
US8324552B2 (en) 1996-03-25 2012-12-04 Donnelly Corporation Vehicular image sensing system
US7655894B2 (en) 1996-03-25 2010-02-02 Donnelly Corporation Vehicular image sensing system
US8481910B2 (en) 1996-03-25 2013-07-09 Donnelly Corporation Vehicular image sensing system
US8492698B2 (en) 1996-03-25 2013-07-23 Donnelly Corporation Driver assistance system for a vehicle
US6806452B2 (en) 1997-09-22 2004-10-19 Donnelly Corporation Interior rearview mirror system including a forward facing video device
US6768422B2 (en) 1997-10-30 2004-07-27 Donnelly Corporation Precipitation sensor
US6353392B1 (en) 1997-10-30 2002-03-05 Donnelly Corporation Rain sensor with fog discrimination
DE19755441A1 (en) * 1997-12-13 1999-06-17 Itt Mfg Enterprises Inc Adjustment of automobile rain sensors without additional circuitry
US6373215B1 (en) 1998-01-20 2002-04-16 Itt Manufacturing Enterprises, Inc. Device for monitoring the state of a window pane
DE19801745A1 (en) * 1998-01-20 1999-07-22 Itt Mfg Enterprises Inc Car windscreen condition monitor for detecting rain
WO2000032453A1 (en) * 1998-11-28 2000-06-08 Valeo Auto-Electric Wischer Und Motoren Gmbh Device for detecting particles on a windshield
US6313454B1 (en) 1999-07-02 2001-11-06 Donnelly Corporation Rain sensor
US8203443B2 (en) 1999-08-12 2012-06-19 Donnelly Corporation Vehicle vision system
US8629768B2 (en) 1999-08-12 2014-01-14 Donnelly Corporation Vehicle vision system
US7414216B2 (en) * 2005-01-07 2008-08-19 Lite-On It Corporation Touching rib of input unit and mold thereof
US8162518B2 (en) 2006-08-11 2012-04-24 Donnelly Corporation Adaptive forward lighting system for vehicle
US8434919B2 (en) 2006-08-11 2013-05-07 Donnelly Corporation Adaptive forward lighting system for vehicle
US7972045B2 (en) 2006-08-11 2011-07-05 Donnelly Corporation Automatic headlamp control system
US8017898B2 (en) 2007-08-17 2011-09-13 Magna Electronics Inc. Vehicular imaging system in an automatic headlamp control system
US9018577B2 (en) 2007-08-17 2015-04-28 Magna Electronics Inc. Vehicular imaging system with camera misalignment correction and capturing image data at different resolution levels dependent on distance to object in field of view
US8451107B2 (en) 2007-09-11 2013-05-28 Magna Electronics, Inc. Imaging system for vehicle
US9796332B2 (en) 2007-09-11 2017-10-24 Magna Electronics Inc. Imaging system for vehicle
US8446470B2 (en) 2007-10-04 2013-05-21 Magna Electronics, Inc. Combined RGB and IR imaging sensor
US8908040B2 (en) 2007-10-04 2014-12-09 Magna Electronics Inc. Imaging system for vehicle
US9509957B2 (en) 2008-07-24 2016-11-29 Magna Electronics Inc. Vehicle imaging system
US9940528B2 (en) 2015-11-20 2018-04-10 Magna Electronics Inc. Driver assistance system for vehicle

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